Ron Pickering W3FJW
Feb 9, 2006, 8:27 PM
Post #16 of 20
What do you think about putting the ground rod (in new construction) in the foundation?
Re: [Esteban] How can I find? Where can I get?
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Up north it's practical where it's damper ground. However an 8' ground rod would still be required at the panel, and the ground connection has to be available at all time for inspection so couldn't be covered by the foundation
One is to install multiple (3) ground rods, some distance apart, all tied together, 8 foot long rods preferred (mandatory NOB), probably 8 foot apart. Another technique, which can be used in rocky soils, is to encircle the entire building with buried heavy copper cable without insulation, so this long loop of copper is the ground. I would still add a few ground rods, tied to the loop of copper.
Either would be acceptable according to code. #4awg would be the required wire but still need a gnd rod at rhe panel. The price of copper makes the copper wire a bit expensive, but would be the way I'd do it for myself on new construction.
As for Petes setup, your ten amp breaker makes it easier to troubleshoot if something shorts out. 10 amp trips, it's the pump. 20 amp trips it's the lighting circuit. However, if the ten amp breaker lags, the twenty amp could trip as well. Not too likely, but possible.
Keep in mind that the breakers are meant to protect the wireing, not the equipment.
20 amp breaker=#12 wire
15 amp breaker=#14 wire
10 amp breaker=$16 wire
In other words if your casa is wired with #14 wire, largest breaker that can be used is a 15 amp for branch (lighting, refrigerator, etc.) circuits.
As an aside, sounds to me that the electric company runs higher voltage so the have at least 115volts at the end of the runs to take into account the low voltage distribution losses & inefficiencies. Hell of a way to run a ship.
Getting older and still not down here.
(This post was edited by Ron Pickering W3FJW on Feb 9, 2006, 8:42 PM)