How far can you take your service entrance wires into a...
2010年7月28日 · As per local rule we can run service feeders unfused if encased in 3" of cement or buried in conduit under the slab. The restriction is no more than 5' of seu or conduit exposed or concealed unfused out here, some often get a unwritten pass thru a crawlspace ( strapping se cable to bottom of joist) .
3 wire residential panel vs 4 wite - Electrician Talk
2017年10月20日 · I'm a little confused here. I've only seen 3 wire service entrance cables to residential panels. In the main panel I understand the ground and neutral are connected. I've seen a 4 wire main residential panel on a site and the neutral and ground were separated. Are the connected somewhere else, such as meter base or transformer? Thanks
SE Cable Sheathing Repair - Electrician Talk
2016年2月17日 · frenchelectrican. 8662 posts · Joined 2007. #5 · Feb 20, 2016. Best to replace it due the water can get into the sheating and water can go down to breakerbox or fuse box and can do some damage from that. It is pretty much SOP to just change it to new one or run new one in conduit ( this what I rather do this in most case ) and be done with it..
Uninsulated neutral in service entrance conduit
2011年10月16日 · 230.41 Insulation of Service-Entrance Conductors. Service-entrance conductors entering or on the exterior of buildings or other structures shall be insulated. (1) Bare copper used in a raceway or part of a service cable assembly. (2) Bare copper for direct burial where bare copper is judged to be suitable for the soil conditions.
Residential Service entrance conductors in crawl space
2018年5月9日 · Residential Service entrance conductors in crawl space. I am upgrading a electrical service to 200 amps. The service is overhead. I am planning to run conduit from the meter to the Panel along the siding and enter into the crawl space under the residence. It then will turn up into the bedroom to the panel which is next to the door.
320 amp service cable size - Electrician Talk
2009年12月1日 · Firstly, lets get the terminology straight because it is confusing. A 200 amp service has a 200 amp meter base that is rated 160 amps for continuous load but rated 200 amps for non-continuous loads. A 400 amp meter base is rated 400 amps non- continuous loads and 320 amps (80%) for continuous loads. So the service you are installing is a 400 ...
SER Cable in Conduit - Electrician Talk
2016年11月30日 · The SE Conductor is usually attached to the bottom of the floor joists. Real hard for that size to run it through the joists and also would required some pretty big holes. #4 SER is pretty small and I use 1 1/8" DareDevil spade bits to make holes when running it. 1" may work, but why fight it. It may be a code violation to bend the SER in the ...
400-amp service - Electrician Talk
2009年2月3日 · Provided a single set of 3-wire, single-phase, service-entrance conductors in raceway or cable supplies a one-family, two-family, or multifamily dwelling, the reduced conductor size permitted by 310.15(B)(6) is applicable to the service-entrance conductors, service-lateral conductors, or feeder conductors that supply the main power feeder to a ...
400 amp three phase service entrance - Electrician Talk
2010年1月19日 · Thats what a load calc is, it's the minimum , it doesn't provide for future expansion. First you need to do a load calculation but if you are protecting the service with 400 amps then it would be wise to use a wire that has a 400 amp rating. Table 310.16 in the NEC will help determine this info.
Service entrance wire bending space - Electrician Talk
2013年10月26日 · Conductors to CT cabinet are parallel 400's in 1- 4" pipe. I am having trouble deciding the best way to get from the CT into the top of the panel. The panel is listed at 5.75" deep. Per Table 312.6 (A) I will not have the minimum space to …