Using ST_MakeEnvelope, create a polygon ranging N/S 40 to 42º, and E/W from -102º to -50º. Looking at a number of points, it appears latitudes are vertically shifted, whereby points a bit North of polygon are considered "in" and points just above the Southern border are erroneously considered "out".įor example, single point in database defined as geography(Point,4326), with latitude longitude (45º, -79º). Using ST_Covers, I'm getting "true" for a geography point which clearly exists outside of the polygon. Pbuck Asks: ST_Covers(envelope, point) yields different results for same pointĬlearly missing a basic concept. I know 10 AWG is the standard for these size runs but i figure going one size bigger would be better that way its a smidge beefier than necessary and i wouldn't have to worry about overheating or anything.
I could do a shorter extension cord but it would be a shorter run this way than if i ran the wire for the outlet up and over through the attic to closer to the door so the generator can be outside. She is looking at some 3k generators so i was thinking i could install a 30A breaker with an interlock and run some 8 AWG to a 5-30 outlet like a few feet from the panel, and use some 8 AWG to make a 20ft extension cable. I was reading a few things off google and most say not to plug into a random outlet because backfeeding, but if the main is turned off as step one doesn't that eliminate the possibility of backfeeding? I really don't want to have to wire in a new panel for a transfer switch, couldn't i just install an interlock like this or a similar product? When i visit her every month i do all the random fixes and stuff around the house and if she gets a generator i will have to get it working and make clear directions on how to operate it, just like my dad did back in the day. My dad passed a few years ago and my mom moved to a smaller house and now is considering getting a generator to power things when the power goes out. Although I'm also inclined to think this is possibly just the way we used to do things and have since changed the standards. My dad worked as an electrician for 37 years before retiring so I'm inclined to believe this was perfectly safe to do. then plug in the generator with a suicide cord to an outlet he installed in the garage (pretty sure it was a 6-50) then fire up the generator and it would power the things like the fridge, freezer, microwave, etc.
When the power would go out the process was turn off the main breaker that supplies the house from the street and turn off any random breakers for crap that was unnecessary (marked with red dots in the panel). Growing up in the mountains of CA the power would go out damn near every time it snowed so my dad finally had enough and got a 4k or 5k generator when i was young. Rasmukri Asks: How to wire in a backup generator?
0 kommentar(er)
