You can splice. But all splices have to be in an accessible junction box.
So what wire size do you recommend going from the new 200 amp main to the existing 100 amp subpanel? The distance is 65 ft.
#1 aluminum.
Not even if you have linesmans and a klein 11 in 1?
Not sure where you got that from what was posted. They said an existing main to subpanel.
Well, maybe
He wants to upgrade to 200 from a 100. He has #4. #4 copper is a service entrance conductor for a 100 amp service, not a feeder.. What else could it be? He might have a main breaker outside that's a 100, but it's still a 100 amp service.
If you have/get a 200 amp service, the easiest and most cost effective is going to be #2 SER cable and a ...90 amp breaker.
Well he said mail panel. i think everyone is assuming he meant MAIN panel.
They also said "existing main to sub". They are asking about the run from the main to the sub and if it can be spliced. Lots of details I don't know and if I was to guess they would be a wag. If there is an existing 100A subpanel I would guess the main is bigger than that although I don't think it would have to be.
you need to read it again
not true under the NEC there is no rule. some AHJs, however do have a limit.
Maybe it's different up there, but how in the blue hell can you put a panel in the basement with only 39" of wire? Before the 2020 and the exterior disconnect requirements, around here, we were able to go up to 20' to the panel. A typical basement panel would require a minimum of 5' of conduit just to come out of the bottom of the meter can, LB through the wall, and 90 down into the top of the panel.
Gotcha. I confused the 39" meter with the wattage measuring type of meter. 39" of wire are allowed inside. That's doable. For some reason that closely resembles my head up my ***, I was thinking 39" of unprotected wire total, beginning at the electric meter.
that is correct. the NEC has no such limit.
If indeed it does get upgraded from a 100 to a 200, it's more than likely that everything that gets touched will have to be brought up to the current code. If the OP is on the 2020, that means an exterior disconnect. 99% of the time that will be accomplished by using a meter main so there won't be any unprotected wire anywhere.
New member here, been lurking for awhile. The residential rule up here is 10' (3 meters) from the meter to the main breaker. Anything past 10' and you need to use rigid steel conduit. The exception is a farm service where you have the combination meter/breaker on a pole. With the farm service you can run as far as you want through the house, barn, or whatever building it is that you are servicing.