jnlombard Posted April 11, 2007 Report Share Posted April 11, 2007 Hi, Is there any argument to having a panel, and main breaker, rated much higher than the supply from the HYDRO company? eg cables from Hydro size what commonly carries say 100A spliced at the mast into say 200A rated size cables. This means that there are circuits total more than what seems to come from the Hydro (old building - little control and lax rules applied in this area) Link to comment Share on other sites More sharing options...
Richard Moore Posted April 12, 2007 Report Share Posted April 12, 2007 If you are talking about the wire sizes at an overhead service drop from the utility pole, then conductors in free air have, very roughly, about twice the amperage rating that we HI's use for the service feed to the panel. The utility company has it's own rules that might even surpass that. It's all about heat dissipation. Anyway, quite normal to see thinner wires connected to thicker SECs entering the masthead. Link to comment Share on other sites More sharing options...
chicago Posted April 12, 2007 Report Share Posted April 12, 2007 You guys must read minds since I was looking at this yesterday afternoon. Download Attachment: tijsec.jpg 48.49 KB Link to comment Share on other sites More sharing options...
PAbernathy Posted April 13, 2007 Report Share Posted April 13, 2007 Yep, The POCO tends to run to their own BEAT most of the time. Link to comment Share on other sites More sharing options...
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