are there shorting bars for these things?

Depends on what you mean by shorting bars?

For anyone who has secured the terminal strip to a surface, what size/length of fastener did you use?

You can use #4 3/4 inch screws.

Will these work w fat 12 AWG stranded wire for 12v outdoor lighting, or is this only for smaller wire?

No. The largest wire this will take is 14A. 12Ga wire is 3+mm, this is 2.5mm. Of course with stranded you could always over twist or cut a few strands of to jam it in. I wouldn’t recommend it. The other issue is these are rated for 10a. If you are using 12ga wire near capacity you could melt them. And finally, out-door means corrosion is an issue. I would suggest an automotive or wet/damp rated block instead of these. I use these successfully for a dry location outdoor block for sprinkler valves. After a few years I throw them away and replace because they corrode and don’t loosen any more.

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Weewooday 20 Pieces Terminal Strips Electrical Block Set 12-position Dual Row White Screw Terminal Strip 10 a 380 V Wire Connector Electrical Barrier Block for Small Projects Home

Weewooday 20 Pieces Terminal Strips Electrical Block Set 12-position Dual Row White Screw Terminal Strip 10 a 380 V Wire Connector Electrical Barrier Block for Small Projects Home

Product ID: 311235140

Details

Brand
Weewooday
Color
white
Connector Type
Screw
Current Rating
10 A
Material
Copper
Mounting Type
Panel Mount

⚡Supports 10A current at 380V for reliable power

🔥Flame-retardant PP shell withstands -40°C to 150°C

🔧12-position dual row with easy screw terminal installation

AR$37792

Duties & taxes included

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Sold byAmazon ArgentinaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Connect with Confidence — Power Up Your Projects Like a Pro!

SAFE RELIABLE - Secure wire contact prevents accidental shorts, giving you peace of mind on every project.
EFFORTLESS SETUP - No welding needed—just strip, insert, and tighten screws for quick, secure connections.
FIREPROOF DURABLE - Flame-retardant, corrosion-resistant shell ensures safety and longevity under extreme conditions.
POWERFUL PERFORMANCE - Handles up to 10A current and 380V voltage, perfect for demanding electrical projects.
CUSTOMIZABLE VERSATILE - Easily cut to size for tailored applications across lighting, appliances, and electrical maintenance.

The Weewooday 20-piece terminal strip set features 12-position dual-row screw connectors made from flame-retardant PP and copper-plated zinc alloy, supporting up to 10A and 380V. Designed for easy installation without welding, these durable, customizable blocks ensure safe, reliable electrical connections for home and small projects.

Specifications

ASIN	B08V4W637Q
Best Sellers Rank	#13,697 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #20 in Terminal Blocks
Brand Name	Weewooday
Color	white
Connector Type	Screw
Current Rating	10 A
Customer Reviews	4.6 4.6 out of 5 stars (752)
Item Dimensions W x H	7.87"W x 0.59"H
Manufacturer	Weewooday
Material Type	Copper
Model	Weewooday-13102
Mounting Type	Panel Mount
Number Of Contacts	12
Number Of Poles	12
Number of Items	20
Number of Positions	12
Part Number	Weewooday-13102
Unit Count	20 Count
Upper Temperature Rating	150 °C
Voltage	380 volts

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