Ready for inspection, is this subpanel okay?
- Thread starter Highbeam
- Start date
VHF
Well-known member
A+ for neatness and workmanship!
sands35
Well-known member
Looks clean. (not a code guy or pro).
Are the wires going into the box supposed to have clamps on them? (you have what looks like bushings, not clamps. Every box I've seen has clamps).
Are the wires going up out of the box stapled within 6" (or is it 8"?) The ones going down look like they are, not ones going up do not (but picture is cut off).
One item that helps in the future is to use a small bit of NM sheath to write the circuit name on it, then put it over the hot wire going into the breaker. Helps in the future so you know what is what with the panel off.
Are the wires going into the box supposed to have clamps on them? (you have what looks like bushings, not clamps. Every box I've seen has clamps).
Are the wires going up out of the box stapled within 6" (or is it 8"?) The ones going down look like they are, not ones going up do not (but picture is cut off).
One item that helps in the future is to use a small bit of NM sheath to write the circuit name on it, then put it over the hot wire going into the breaker. Helps in the future so you know what is what with the panel off.
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No, the wires are not stapled within 6" but there are romex clamps in the panel knockouts. They are the plastic kind.
With these clamps and in this wall, must I staple the romex? how close to the panel?
From the panel I go through some blocking within three feet and then the top plate and then stapled to a block on top of the joist in the ceiling.
Thank you for the input, hope someone comes along that knows the requirement for this.
With these clamps and in this wall, must I staple the romex? how close to the panel?
From the panel I go through some blocking within three feet and then the top plate and then stapled to a block on top of the joist in the ceiling.
Thank you for the input, hope someone comes along that knows the requirement for this.
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nehog
Well-known member
What size is the main breaker, and what AWG is the input cable?
dbonne
Well-known member
NEC 334.30 (for NM cable) states that cable shall be supported within 12 inches of every outlet box, junction box, cabinet, or fitting.
dbonne
Well-known member
One other thing, Highbeam, Depending on your inspector and jurisdiction, you may need to reidentify that white wire (the one you have a wrap of black tape on) entirely to the conduit fitting where it enters the box.
Panel looks sweet! Nice work.
Panel looks sweet! Nice work.
sands35
Well-known member
And every 4.5' thereafter. Out of picture and OK at 3' at the blocking.
Speedy Petey
Well-known member
I would have installed that panel with the main breaker on the bottom.
*And please no one use the word upside-down.
*And please no one use the word upside-down.
sands35
Well-known member
Milton Shaw
Well-known member
- Joined
- Feb 11, 2011
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I may be missing it but I don't see the main neutral wire coming in from the top like the power and ground wires do. Neat work if you have it hidden with the other neutrals but you should make it plain that it comes in with the other main lines.
nehog
Well-known member
6 AWG is rated for 37 amps for power transmission. I expect the inspector will fail it for that, a 60 amp circuit needs 4 AWG.
awdblazer
Well-known member
The subpanel passed a year ago but with only a few circuits. It is a 4 wire feed from the main panel in the house. 60 amp breaker at the main panel. Same as the 60 amp breaker that feeds my hot tub with 6 gauge.
Not sure about the "power transmission" difference but the regular chart says 6 guage NM is good for 55 but you can round up to 60 so that's what I did and the inspector allowed it.
The white wire is there but is hard to see since it is so small. The more circuits I add, the smaller that the 6 gauge looks!
wyliesdiesels
Well-known member
HuH? #6 THWN is rated for 65a[NEC 2011 310.15(b)(6)] Where did u come up with 37a?
And service entrance conductors(what I think youre calling power transmission) are sized on a different table AND they have higher ampacity ratings than branch circuit ratings! But a feeder to a garage IS NOT a service entrance conductor!U didnt use Romex for your feeder, u used THWN so im not sure why u brought up Romex. Anyhow, yes, #6 Romex does have an ampacity of 55a(60c deg column). THWN has a 65a ampacity because it would be sized on the 75c deg column! So i wouldnt worry about the feeder!
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Well, yes, I did. What you can't see is that between the subpanel and the main panel I have a junction box at the house in the house garage where I used to have a welder plug fed by 6/3 romex. At that junction box I switched to conduit and thwn for the outside part of the run. So I treated the whole run as romex nm with the lower 60 amp limit. All inspected of course.
MrMark
Well-known member
Correct.
What is that green screw doing there. Have you installed that bonding screw making this service equipment? In other words, have you mistakenly bonded the equipment grounding buss to the neutral buss?
What is that green screw doing there. Have you installed that bonding screw making this service equipment? In other words, have you mistakenly bonded the equipment grounding buss to the neutral buss?
matt151617
Well-known member
It looks like that green screw is on the ground bar only, bonding the ground bar to the panel case. Should be ok as long as isn't on the neutral bar.
On this siemens panel that green screw comes from the factory loosened and then you tighten it into the panel to bond the ground buss to the panel. The instructions even tell you to do that before mounting onto a wall so that you are able to get a good torque on it.
The neutral buss (on left) is insulated from the panel but comes from the factory with a thick brass bar that runs from one buss to the other. That bar was removed to provide the isolated neutral at the sub.
MrMark
Well-known member
good deal.
wyliesdiesels
Well-known member
O ok. Got it. Then u did it correctly!
dbonne
Well-known member
Nice work! Enjoy the electricity and all of the power that comes with it!