Mr. Heater Big Max help

[TL1]

I am getting ready to hang my 45k big max heater and was going to put a plug on it for power (outlet on dedicated circut). There are 2 black wires taped together (hot) and 3 white wires taped together (nuetral) but where is the ground? Can you just ground it to the the sheet metal somewhere or is there a specific location? Wiring diagrams haven't been much help for me.

Any ideas?

TIA

Tony

 

[Junkman]

I assume that you are talking about a 110 volt unit, and that the taped wires are all 110 volt wires. If that is the case, then there is no wire for the ground, however, you will find somewhere on the case where you can attach a ground wire. It is not unusual for manufacturers to only supply a ground screw that you attach to. If you are not familiar with electrical wiring, I suggest that you ask for help from someone that is familiar with electrical circuits. With electric, often you don't get a second chance to make a mistake, since the first mistake often times can be debilitating or fatal. You are better off learning from someone with experience than experimenting on your own...

 

[TL1]

I am confident in my wiring ability. As I stated I can find no obvious ground location on my first look inside the heater. I know that there a quite a few people running these heaters here so I thought someone might know something specific about this application.

Tony

 

[TL1]

Anybody have one of these they could take a look for me?

Thanks,

Tony

 

[isaac338]

Have you tried giving Mr Heater a call? They can probably answer the question pretty quick.

 

[scokat916]

I attached mine to an existing screw on the chasis sheetmetal.

 

[dipper]

I haven't looked at the electrical yet on mine, but if there is no ground wire provided; connect your ground to a nearby screw, and be sure that there is no paint around it so you get a good metal to metal connection.

 

[russlaferrera]

I haven't looked at the electrical yet on mine, but if there is no ground wire provided; connect your ground to a nearby screw, and be sure that there is no paint around it so you get a good metal to metal connection.

What he said! For the unit to be grounded, attach the unit to ground.

Example: a 120 volt, 3 wire thingy 1 hot (black), 1 neutral (white) 1 ground (green) to the case.

 

[fatfarmer]

I just put a eyelet wire connector to the ground wire and unscrewed the green painted screw on the inside of the heater. The screw is on the inside sheet metal and is painted green.

 

[wrencher34]

tl I think there is a green ground screw (upper right side) as you are looking at the side pannel with it off ,but i will try to post pic on tue have to work sun,mon

 

[wrencher34]

directions are hard to understand on the mr heater system called the hot liine 2-3 times

 

[gotta56forme]

I will be hanging my 45K Big Maxx soon, also. Mine will be on a dedicated circuit, too. I am going to use metal conduit between the BMaxx and the circuit terminating work box. My thought is the conduit will be connected to my circuit equipment ground (bare) wire. This will provide the equipment ground 'link' between the BMaxx chassis and the bare wire (equipment ground) on the circuit. My understanding is it would not be 'code' to have the unprotected wires coming out of the ceiling/wall and going into the BMaxx, thus my using the metal cased conduit.

 

[gotta56forme]

I learned this weekend, that my idea of using the conduit as the 'ground' carrier is not to code. I've since located the green ground screw inside the panel access area and will be using that.

I didn't want to mislead anyone....